/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_ok_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:18:39,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:18:39,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:18:39,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:18:39,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:18:39,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:18:39,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:18:39,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:18:39,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:18:39,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:18:39,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:18:39,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:18:39,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:18:39,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:18:39,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:18:39,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:18:39,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:18:39,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:18:39,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:18:39,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:18:39,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:18:39,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:18:39,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:18:39,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:18:39,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:18:39,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:18:39,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:18:39,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:18:39,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:18:39,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:18:39,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:18:39,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:18:39,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:18:39,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:18:39,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:18:39,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:18:39,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:18:39,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:18:39,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:18:39,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:18:39,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:18:39,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 18:18:39,285 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:18:39,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:18:39,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:18:39,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:18:39,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:18:39,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:18:39,288 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:18:39,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:18:39,288 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:18:39,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:18:39,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:18:39,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:18:39,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:18:39,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:18:39,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:18:39,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:18:39,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:18:39,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:18:39,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:18:39,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:18:39,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:18:39,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:18:39,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:18:39,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:18:39,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:18:39,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:18:39,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:18:39,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:18:39,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:18:39,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:18:39,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:18:39,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:18:39,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:18:39,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:18:39,561 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:18:39,562 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:18:39,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longest.i [2022-12-12 18:18:40,622 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:18:40,897 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:18:40,897 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i [2022-12-12 18:18:40,925 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca23ca57/efeeb2409d1f401c989496a5b9e1082c/FLAGd6542450b [2022-12-12 18:18:40,940 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca23ca57/efeeb2409d1f401c989496a5b9e1082c [2022-12-12 18:18:40,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:18:40,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:18:40,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:18:40,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:18:40,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:18:40,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:18:40" (1/1) ... [2022-12-12 18:18:40,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc7cf0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:40, skipping insertion in model container [2022-12-12 18:18:40,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:18:40" (1/1) ... [2022-12-12 18:18:40,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:18:40,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:18:41,292 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2022-12-12 18:18:41,296 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2022-12-12 18:18:41,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:18:41,309 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:18:41,360 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2022-12-12 18:18:41,362 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2022-12-12 18:18:41,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:18:41,408 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:18:41,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41 WrapperNode [2022-12-12 18:18:41,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:18:41,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:18:41,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:18:41,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:18:41,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,467 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 202 [2022-12-12 18:18:41,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:18:41,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:18:41,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:18:41,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:18:41,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,498 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:18:41,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:18:41,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:18:41,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:18:41,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (1/1) ... [2022-12-12 18:18:41,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:18:41,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:18:41,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 18:18:41,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 18:18:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-12 18:18:41,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-12 18:18:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-12 18:18:41,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-12 18:18:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:18:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:18:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 18:18:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:18:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 18:18:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:18:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:18:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:18:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:18:41,576 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 18:18:41,740 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:18:41,741 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:18:42,022 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:18:42,029 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:18:42,029 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 18:18:42,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:18:42 BoogieIcfgContainer [2022-12-12 18:18:42,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:18:42,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:18:42,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:18:42,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:18:42,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:18:40" (1/3) ... [2022-12-12 18:18:42,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46835e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:18:42, skipping insertion in model container [2022-12-12 18:18:42,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:18:41" (2/3) ... [2022-12-12 18:18:42,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46835e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:18:42, skipping insertion in model container [2022-12-12 18:18:42,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:18:42" (3/3) ... [2022-12-12 18:18:42,037 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2022-12-12 18:18:42,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:18:42,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 18:18:42,051 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:18:42,132 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 18:18:42,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 215 transitions, 446 flow [2022-12-12 18:18:42,237 INFO L130 PetriNetUnfolder]: 13/213 cut-off events. [2022-12-12 18:18:42,238 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:18:42,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 213 events. 13/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 357 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-12-12 18:18:42,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 215 transitions, 446 flow [2022-12-12 18:18:42,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 204 transitions, 417 flow [2022-12-12 18:18:42,265 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:18:42,287 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 204 transitions, 417 flow [2022-12-12 18:18:42,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 204 transitions, 417 flow [2022-12-12 18:18:42,330 INFO L130 PetriNetUnfolder]: 13/204 cut-off events. [2022-12-12 18:18:42,331 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:18:42,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 204 events. 13/204 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 293 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-12-12 18:18:42,340 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 204 transitions, 417 flow [2022-12-12 18:18:42,340 INFO L226 LiptonReduction]: Number of co-enabled transitions 9810 [2022-12-12 18:18:50,429 INFO L241 LiptonReduction]: Total number of compositions: 167 [2022-12-12 18:18:50,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:18:50,457 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@77f0c363, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:18:50,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 18:18:50,459 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-12 18:18:50,459 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:18:50,459 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:18:50,460 INFO L214 CegarLoopForPetriNet]: trace histogram [1] [2022-12-12 18:18:50,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:18:50,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:18:50,465 INFO L85 PathProgramCache]: Analyzing trace with hash 880, now seen corresponding path program 1 times [2022-12-12 18:18:50,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:18:50,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737210576] [2022-12-12 18:18:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:50,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:18:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:50,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:18:50,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737210576] [2022-12-12 18:18:50,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737210576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:18:50,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:18:50,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-12 18:18:50,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065824008] [2022-12-12 18:18:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:18:50,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 18:18:50,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:18:50,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 18:18:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 18:18:50,584 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 82 [2022-12-12 18:18:50,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 173 flow. Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:50,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:18:50,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 82 [2022-12-12 18:18:50,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:18:51,052 INFO L130 PetriNetUnfolder]: 3558/5821 cut-off events. [2022-12-12 18:18:51,053 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-12 18:18:51,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11288 conditions, 5821 events. 3558/5821 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 33901 event pairs, 2900 based on Foata normal form. 0/3129 useless extension candidates. Maximal degree in co-relation 11124. Up to 5369 conditions per place. [2022-12-12 18:18:51,081 INFO L137 encePairwiseOnDemand]: 80/82 looper letters, 65 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2022-12-12 18:18:51,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 299 flow [2022-12-12 18:18:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 18:18:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 18:18:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 97 transitions. [2022-12-12 18:18:51,091 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2022-12-12 18:18:51,094 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2022-12-12 18:18:51,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 80 transitions, 299 flow [2022-12-12 18:18:51,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 299 flow [2022-12-12 18:18:51,116 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 299 flow [2022-12-12 18:18:51,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:51,117 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:18:51,117 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:18:51,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:18:51,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:18:51,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:18:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1562134785, now seen corresponding path program 1 times [2022-12-12 18:18:51,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:18:51,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709802045] [2022-12-12 18:18:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:51,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:18:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:51,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:18:51,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709802045] [2022-12-12 18:18:51,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709802045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:18:51,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:18:51,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:18:51,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038015767] [2022-12-12 18:18:51,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:18:51,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:18:51,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:18:51,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:18:51,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:18:51,354 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2022-12-12 18:18:51,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:51,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:18:51,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2022-12-12 18:18:51,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:18:51,539 INFO L130 PetriNetUnfolder]: 1015/1878 cut-off events. [2022-12-12 18:18:51,539 INFO L131 PetriNetUnfolder]: For 162/168 co-relation queries the response was YES. [2022-12-12 18:18:51,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5450 conditions, 1878 events. 1015/1878 cut-off events. For 162/168 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10307 event pairs, 820 based on Foata normal form. 119/1166 useless extension candidates. Maximal degree in co-relation 5169. Up to 1725 conditions per place. [2022-12-12 18:18:51,546 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 38 selfloop transitions, 2 changer transitions 38/91 dead transitions. [2022-12-12 18:18:51,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 91 transitions, 503 flow [2022-12-12 18:18:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:18:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:18:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2022-12-12 18:18:51,549 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2022-12-12 18:18:51,549 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2022-12-12 18:18:51,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 91 transitions, 503 flow [2022-12-12 18:18:51,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 276 flow [2022-12-12 18:18:51,555 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 276 flow [2022-12-12 18:18:51,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:51,555 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:18:51,555 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:18:51,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:18:51,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:18:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:18:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1524891937, now seen corresponding path program 1 times [2022-12-12 18:18:51,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:18:51,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26233522] [2022-12-12 18:18:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:51,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:18:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:51,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:18:51,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26233522] [2022-12-12 18:18:51,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26233522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:18:51,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:18:51,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:18:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678450215] [2022-12-12 18:18:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:18:51,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:18:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:18:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:18:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:18:51,605 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2022-12-12 18:18:51,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:51,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:18:51,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2022-12-12 18:18:51,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:18:51,719 INFO L130 PetriNetUnfolder]: 372/779 cut-off events. [2022-12-12 18:18:51,720 INFO L131 PetriNetUnfolder]: For 347/347 co-relation queries the response was YES. [2022-12-12 18:18:51,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 779 events. 372/779 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3345 event pairs, 163 based on Foata normal form. 0/614 useless extension candidates. Maximal degree in co-relation 2489. Up to 624 conditions per place. [2022-12-12 18:18:51,724 INFO L137 encePairwiseOnDemand]: 79/82 looper letters, 49 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2022-12-12 18:18:51,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 459 flow [2022-12-12 18:18:51,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:18:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:18:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2022-12-12 18:18:51,725 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3699186991869919 [2022-12-12 18:18:51,726 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, -26 predicate places. [2022-12-12 18:18:51,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 66 transitions, 459 flow [2022-12-12 18:18:51,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 64 transitions, 451 flow [2022-12-12 18:18:51,730 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 64 transitions, 451 flow [2022-12-12 18:18:51,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:51,730 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:18:51,730 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:18:51,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:18:51,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:18:51,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:18:51,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1405961901, now seen corresponding path program 1 times [2022-12-12 18:18:51,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:18:51,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985770293] [2022-12-12 18:18:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:51,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:18:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:51,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:18:51,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985770293] [2022-12-12 18:18:51,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985770293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:18:51,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:18:51,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:18:51,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002023083] [2022-12-12 18:18:51,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:18:51,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:18:51,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:18:51,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:18:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:18:51,826 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2022-12-12 18:18:51,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 64 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:51,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:18:51,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2022-12-12 18:18:51,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:18:51,896 INFO L130 PetriNetUnfolder]: 210/517 cut-off events. [2022-12-12 18:18:51,896 INFO L131 PetriNetUnfolder]: For 457/457 co-relation queries the response was YES. [2022-12-12 18:18:51,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 517 events. 210/517 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2192 event pairs, 0 based on Foata normal form. 48/459 useless extension candidates. Maximal degree in co-relation 1978. Up to 423 conditions per place. [2022-12-12 18:18:51,899 INFO L137 encePairwiseOnDemand]: 77/82 looper letters, 55 selfloop transitions, 5 changer transitions 2/73 dead transitions. [2022-12-12 18:18:51,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 654 flow [2022-12-12 18:18:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:18:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:18:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2022-12-12 18:18:51,900 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34552845528455284 [2022-12-12 18:18:51,901 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, -25 predicate places. [2022-12-12 18:18:51,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 73 transitions, 654 flow [2022-12-12 18:18:51,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 71 transitions, 642 flow [2022-12-12 18:18:51,904 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 71 transitions, 642 flow [2022-12-12 18:18:51,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:51,904 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:18:51,904 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:18:51,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 18:18:51,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:18:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:18:51,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1110294922, now seen corresponding path program 1 times [2022-12-12 18:18:51,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:18:51,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216237746] [2022-12-12 18:18:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:51,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:18:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:51,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:18:51,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216237746] [2022-12-12 18:18:51,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216237746] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:18:51,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463426390] [2022-12-12 18:18:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:51,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:18:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:18:51,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:18:51,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 18:18:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:52,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-12 18:18:52,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:18:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:52,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:18:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:52,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463426390] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:18:52,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:18:52,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-12 18:18:52,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107025799] [2022-12-12 18:18:52,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:18:52,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 18:18:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:18:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 18:18:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-12 18:18:52,145 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2022-12-12 18:18:52,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 71 transitions, 642 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:52,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:18:52,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2022-12-12 18:18:52,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:18:52,321 INFO L130 PetriNetUnfolder]: 270/698 cut-off events. [2022-12-12 18:18:52,322 INFO L131 PetriNetUnfolder]: For 1013/1013 co-relation queries the response was YES. [2022-12-12 18:18:52,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3514 conditions, 698 events. 270/698 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2660 event pairs, 0 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 3163. Up to 545 conditions per place. [2022-12-12 18:18:52,325 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 80 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2022-12-12 18:18:52,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 1093 flow [2022-12-12 18:18:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 18:18:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 18:18:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2022-12-12 18:18:52,351 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3231707317073171 [2022-12-12 18:18:52,352 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, -21 predicate places. [2022-12-12 18:18:52,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 98 transitions, 1093 flow [2022-12-12 18:18:52,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 98 transitions, 1093 flow [2022-12-12 18:18:52,355 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 98 transitions, 1093 flow [2022-12-12 18:18:52,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:52,356 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:18:52,356 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:18:52,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 18:18:52,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:18:52,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:18:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:18:52,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1167371128, now seen corresponding path program 2 times [2022-12-12 18:18:52,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:18:52,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087802496] [2022-12-12 18:18:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:18:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:18:52,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087802496] [2022-12-12 18:18:52,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087802496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:18:52,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315037783] [2022-12-12 18:18:52,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:18:52,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:18:52,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:18:52,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:18:52,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 18:18:52,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:18:52,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:18:52,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 18:18:52,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:18:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:52,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:18:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:53,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315037783] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:18:53,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:18:53,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-12 18:18:53,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420596182] [2022-12-12 18:18:53,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:18:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 18:18:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:18:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 18:18:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-12 18:18:53,056 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2022-12-12 18:18:53,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 98 transitions, 1093 flow. Second operand has 13 states, 13 states have (on average 19.076923076923077) internal successors, (248), 13 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:53,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:18:53,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2022-12-12 18:18:53,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:18:53,297 INFO L130 PetriNetUnfolder]: 444/1232 cut-off events. [2022-12-12 18:18:53,297 INFO L131 PetriNetUnfolder]: For 2876/2876 co-relation queries the response was YES. [2022-12-12 18:18:53,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6789 conditions, 1232 events. 444/1232 cut-off events. For 2876/2876 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4767 event pairs, 0 based on Foata normal form. 0/1038 useless extension candidates. Maximal degree in co-relation 6383. Up to 899 conditions per place. [2022-12-12 18:18:53,308 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 164 selfloop transitions, 12 changer transitions 0/188 dead transitions. [2022-12-12 18:18:53,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 188 transitions, 2561 flow [2022-12-12 18:18:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 18:18:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 18:18:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2022-12-12 18:18:53,311 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3170731707317073 [2022-12-12 18:18:53,313 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, -10 predicate places. [2022-12-12 18:18:53,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 188 transitions, 2561 flow [2022-12-12 18:18:53,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 188 transitions, 2561 flow [2022-12-12 18:18:53,321 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 188 transitions, 2561 flow [2022-12-12 18:18:53,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.076923076923077) internal successors, (248), 13 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:53,321 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:18:53,321 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:18:53,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 18:18:53,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 18:18:53,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:18:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:18:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1504019128, now seen corresponding path program 3 times [2022-12-12 18:18:53,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:18:53,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047599305] [2022-12-12 18:18:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:53,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:18:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:18:53,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047599305] [2022-12-12 18:18:53,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047599305] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:18:53,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132703639] [2022-12-12 18:18:53,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 18:18:53,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:18:53,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:18:53,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:18:53,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 18:18:54,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 18:18:54,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:18:54,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-12 18:18:54,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:18:54,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-12 18:18:54,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:18:54,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-12 18:18:54,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 18:18:54,755 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-12 18:18:54,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2022-12-12 18:18:54,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:18:54,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-12 18:18:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-12 18:18:54,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:18:54,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 18:18:54,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 40 [2022-12-12 18:18:54,947 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 18:18:54,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2022-12-12 18:18:54,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2022-12-12 18:18:54,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-12-12 18:18:54,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 18:18:54,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2022-12-12 18:18:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-12 18:18:55,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132703639] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:18:55,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:18:55,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2022-12-12 18:18:55,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133738045] [2022-12-12 18:18:55,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:18:55,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-12 18:18:55,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:18:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-12 18:18:55,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=474, Unknown=3, NotChecked=0, Total=600 [2022-12-12 18:18:55,158 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 82 [2022-12-12 18:18:55,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 188 transitions, 2561 flow. Second operand has 25 states, 25 states have (on average 12.68) internal successors, (317), 25 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:55,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:18:55,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 82 [2022-12-12 18:18:55,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:18:57,151 INFO L130 PetriNetUnfolder]: 1356/3087 cut-off events. [2022-12-12 18:18:57,152 INFO L131 PetriNetUnfolder]: For 12808/12808 co-relation queries the response was YES. [2022-12-12 18:18:57,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20570 conditions, 3087 events. 1356/3087 cut-off events. For 12808/12808 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14391 event pairs, 0 based on Foata normal form. 0/2625 useless extension candidates. Maximal degree in co-relation 19802. Up to 2326 conditions per place. [2022-12-12 18:18:57,169 INFO L137 encePairwiseOnDemand]: 70/82 looper letters, 418 selfloop transitions, 146 changer transitions 48/617 dead transitions. [2022-12-12 18:18:57,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 617 transitions, 8555 flow [2022-12-12 18:18:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-12 18:18:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-12 18:18:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 923 transitions. [2022-12-12 18:18:57,173 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.20465631929046563 [2022-12-12 18:18:57,173 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, 44 predicate places. [2022-12-12 18:18:57,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 617 transitions, 8555 flow [2022-12-12 18:18:57,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 569 transitions, 8363 flow [2022-12-12 18:18:57,189 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 569 transitions, 8363 flow [2022-12-12 18:18:57,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.68) internal successors, (317), 25 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:57,190 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:18:57,190 INFO L214 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:18:57,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 18:18:57,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:18:57,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:18:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:18:57,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1181525803, now seen corresponding path program 1 times [2022-12-12 18:18:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:18:57,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762238409] [2022-12-12 18:18:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:57,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:18:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:57,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:18:57,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762238409] [2022-12-12 18:18:57,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762238409] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:18:57,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916321354] [2022-12-12 18:18:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:57,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:18:57,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:18:57,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:18:57,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 18:18:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:18:57,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 18:18:57,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:18:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:58,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:18:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:18:58,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916321354] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:18:58,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:18:58,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-12-12 18:18:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232781740] [2022-12-12 18:18:58,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:18:58,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-12 18:18:58,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:18:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-12 18:18:58,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2022-12-12 18:18:58,278 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2022-12-12 18:18:58,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 569 transitions, 8363 flow. Second operand has 27 states, 27 states have (on average 19.37037037037037) internal successors, (523), 27 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:58,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:18:58,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2022-12-12 18:18:58,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:18:59,443 INFO L130 PetriNetUnfolder]: 2130/4903 cut-off events. [2022-12-12 18:18:59,443 INFO L131 PetriNetUnfolder]: For 24969/24969 co-relation queries the response was YES. [2022-12-12 18:18:59,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37616 conditions, 4903 events. 2130/4903 cut-off events. For 24969/24969 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 21064 event pairs, 0 based on Foata normal form. 0/4197 useless extension candidates. Maximal degree in co-relation 36757. Up to 3878 conditions per place. [2022-12-12 18:18:59,475 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 903 selfloop transitions, 52 changer transitions 0/1035 dead transitions. [2022-12-12 18:18:59,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 1035 transitions, 17951 flow [2022-12-12 18:18:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-12 18:18:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-12 18:18:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 669 transitions. [2022-12-12 18:18:59,478 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.31378986866791747 [2022-12-12 18:18:59,478 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, 67 predicate places. [2022-12-12 18:18:59,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 1035 transitions, 17951 flow [2022-12-12 18:18:59,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 1035 transitions, 17951 flow [2022-12-12 18:18:59,512 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 1035 transitions, 17951 flow [2022-12-12 18:18:59,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 19.37037037037037) internal successors, (523), 27 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:18:59,512 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:18:59,512 INFO L214 CegarLoopForPetriNet]: trace histogram [24, 24, 24, 24, 24, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:18:59,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 18:18:59,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:18:59,719 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:18:59,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:18:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash -70340267, now seen corresponding path program 2 times [2022-12-12 18:18:59,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:18:59,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29074669] [2022-12-12 18:18:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:18:59,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:18:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:19:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1878 backedges. 0 proven. 1878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:19:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:19:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29074669] [2022-12-12 18:19:00,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29074669] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:19:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926188897] [2022-12-12 18:19:00,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:19:00,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:19:00,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:19:00,707 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:19:00,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 18:19:01,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:19:01,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:19:01,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-12 18:19:01,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:19:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1878 backedges. 0 proven. 1878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:19:01,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:19:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1878 backedges. 0 proven. 1878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:19:02,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926188897] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:19:02,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:19:02,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2022-12-12 18:19:02,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856716895] [2022-12-12 18:19:02,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:19:02,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-12 18:19:02,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:19:02,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-12 18:19:02,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-12-12 18:19:02,251 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2022-12-12 18:19:02,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 1035 transitions, 17951 flow. Second operand has 53 states, 53 states have (on average 19.452830188679247) internal successors, (1031), 53 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:19:02,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:19:02,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2022-12-12 18:19:02,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:19:05,755 INFO L130 PetriNetUnfolder]: 4184/9687 cut-off events. [2022-12-12 18:19:05,755 INFO L131 PetriNetUnfolder]: For 66182/66182 co-relation queries the response was YES. [2022-12-12 18:19:05,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81482 conditions, 9687 events. 4184/9687 cut-off events. For 66182/66182 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 41642 event pairs, 0 based on Foata normal form. 0/8357 useless extension candidates. Maximal degree in co-relation 80532. Up to 7596 conditions per place. [2022-12-12 18:19:05,812 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 1839 selfloop transitions, 104 changer transitions 0/2023 dead transitions. [2022-12-12 18:19:05,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 2023 transitions, 40089 flow [2022-12-12 18:19:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-12 18:19:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-12 18:19:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 1332 transitions. [2022-12-12 18:19:05,821 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3123827392120075 [2022-12-12 18:19:05,822 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, 118 predicate places. [2022-12-12 18:19:05,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 2023 transitions, 40089 flow [2022-12-12 18:19:05,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 2023 transitions, 40089 flow [2022-12-12 18:19:05,882 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 2023 transitions, 40089 flow [2022-12-12 18:19:05,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 19.452830188679247) internal successors, (1031), 53 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:19:05,884 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:19:05,885 INFO L214 CegarLoopForPetriNet]: trace histogram [50, 50, 50, 50, 50, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:19:05,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-12 18:19:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:19:06,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:19:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:19:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2107837677, now seen corresponding path program 3 times [2022-12-12 18:19:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:19:06,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535715380] [2022-12-12 18:19:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:19:06,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:19:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:19:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8300 backedges. 0 proven. 8300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:19:09,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:19:09,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535715380] [2022-12-12 18:19:09,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535715380] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:19:09,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039847951] [2022-12-12 18:19:09,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 18:19:09,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:19:09,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:19:09,067 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:19:09,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 18:19:10,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-12 18:19:10,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:19:10,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 135 conjunts are in the unsatisfiable core [2022-12-12 18:19:10,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:19:10,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:19:10,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 18:19:10,928 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-12 18:19:10,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 36 [2022-12-12 18:19:10,941 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-12 18:19:10,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-12 18:19:11,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-12 18:19:11,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 39 [2022-12-12 18:19:11,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 37 [2022-12-12 18:19:11,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-12-12 18:19:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8300 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 8054 trivial. 0 not checked. [2022-12-12 18:19:11,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 18:19:11,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039847951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:19:11,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 18:19:11,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [53] total 57 [2022-12-12 18:19:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586813819] [2022-12-12 18:19:11,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:19:11,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 18:19:11,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:19:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 18:19:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1389, Invalid=1803, Unknown=0, NotChecked=0, Total=3192 [2022-12-12 18:19:11,335 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 82 [2022-12-12 18:19:11,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 2023 transitions, 40089 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:19:11,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:19:11,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 82 [2022-12-12 18:19:11,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:19:15,738 INFO L130 PetriNetUnfolder]: 4199/9724 cut-off events. [2022-12-12 18:19:15,738 INFO L131 PetriNetUnfolder]: For 66624/66624 co-relation queries the response was YES. [2022-12-12 18:19:15,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90913 conditions, 9724 events. 4199/9724 cut-off events. For 66624/66624 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 41835 event pairs, 9 based on Foata normal form. 0/8389 useless extension candidates. Maximal degree in co-relation 89866. Up to 9028 conditions per place. [2022-12-12 18:19:15,860 INFO L137 encePairwiseOnDemand]: 76/82 looper letters, 2024 selfloop transitions, 9 changer transitions 0/2038 dead transitions. [2022-12-12 18:19:15,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 2038 transitions, 44448 flow [2022-12-12 18:19:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:19:15,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:19:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2022-12-12 18:19:15,861 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.24146341463414633 [2022-12-12 18:19:15,862 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, 122 predicate places. [2022-12-12 18:19:15,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 2038 transitions, 44448 flow [2022-12-12 18:19:15,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 2038 transitions, 44448 flow [2022-12-12 18:19:15,918 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 2038 transitions, 44448 flow [2022-12-12 18:19:15,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:19:15,918 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:19:15,918 INFO L214 CegarLoopForPetriNet]: trace histogram [50, 50, 50, 50, 50, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:19:15,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 18:19:16,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:19:16,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:19:16,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:19:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash 685897740, now seen corresponding path program 1 times [2022-12-12 18:19:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:19:16,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581434885] [2022-12-12 18:19:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:19:16,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:19:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:19:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8300 backedges. 0 proven. 8300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:19:18,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:19:18,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581434885] [2022-12-12 18:19:18,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581434885] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:19:18,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363700062] [2022-12-12 18:19:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:19:18,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:19:18,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:19:18,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:19:18,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 18:19:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:19:19,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-12 18:19:19,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:19:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8300 backedges. 0 proven. 8300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:19:19,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:19:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8300 backedges. 0 proven. 8300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:19:22,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363700062] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:19:22,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:19:22,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 105 [2022-12-12 18:19:22,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559714824] [2022-12-12 18:19:22,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:19:22,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-12-12 18:19:22,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:19:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-12-12 18:19:22,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2022-12-12 18:19:22,422 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2022-12-12 18:19:22,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 2038 transitions, 44448 flow. Second operand has 105 states, 105 states have (on average 19.495238095238093) internal successors, (2047), 105 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:19:22,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:19:22,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2022-12-12 18:19:22,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:19:38,146 INFO L130 PetriNetUnfolder]: 8307/19293 cut-off events. [2022-12-12 18:19:38,146 INFO L131 PetriNetUnfolder]: For 169154/169154 co-relation queries the response was YES. [2022-12-12 18:19:38,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194897 conditions, 19293 events. 8307/19293 cut-off events. For 169154/169154 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 82943 event pairs, 3 based on Foata normal form. 0/16710 useless extension candidates. Maximal degree in co-relation 193759. Up to 17972 conditions per place. [2022-12-12 18:19:38,250 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 3725 selfloop transitions, 208 changer transitions 0/4014 dead transitions. [2022-12-12 18:19:38,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 4014 transitions, 96722 flow [2022-12-12 18:19:38,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-12-12 18:19:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-12-12 18:19:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 2658 transitions. [2022-12-12 18:19:38,254 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3116791744840525 [2022-12-12 18:19:38,254 INFO L295 CegarLoopForPetriNet]: 81 programPoint places, 225 predicate places. [2022-12-12 18:19:38,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 4014 transitions, 96722 flow [2022-12-12 18:19:38,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 4014 transitions, 96722 flow [2022-12-12 18:19:38,381 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 4014 transitions, 96722 flow [2022-12-12 18:19:38,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 19.495238095238093) internal successors, (2047), 105 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:19:38,382 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:19:38,382 INFO L214 CegarLoopForPetriNet]: trace histogram [102, 102, 102, 102, 102, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:19:38,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-12 18:19:38,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:19:38,583 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 18:19:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:19:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash -795195943, now seen corresponding path program 4 times [2022-12-12 18:19:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:19:38,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025793908] [2022-12-12 18:19:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:19:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:19:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:19:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 34833 backedges. 0 proven. 34833 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:19:49,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:19:49,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025793908] [2022-12-12 18:19:49,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025793908] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:19:49,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330496681] [2022-12-12 18:19:49,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 18:19:49,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:19:49,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:19:49,106 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:19:49,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2022-12-12 18:33:06,690 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 18:33:06,690 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 18:33:07,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2022-12-12 18:33:07,891 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2022-12-12 18:33:07,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-12 18:33:07,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-12 18:33:07,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2022-12-12 18:33:07,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932832740] [2022-12-12 18:33:07,905 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-12 18:33:07,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-12-12 18:33:07,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:33:07,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2022-12-12 18:33:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-12-12 18:33:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2022-12-12 18:33:07,913 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 82 [2022-12-12 18:33:07,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 4014 transitions, 96722 flow. Second operand has 105 states, 105 states have (on average 19.504761904761907) internal successors, (2048), 105 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:33:07,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:33:07,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 82 [2022-12-12 18:33:07,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:33:07,918 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-12 18:33:07,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 18:33:07,918 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2022-12-12 18:33:07,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-12 18:33:07,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-12 18:33:07,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-12 18:33:07,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-12 18:33:07,920 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1] [2022-12-12 18:33:07,923 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:33:07,924 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:33:07,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:33:07 BasicIcfg [2022-12-12 18:33:07,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:33:07,926 INFO L158 Benchmark]: Toolchain (without parser) took 866982.60ms. Allocated memory was 189.8MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 164.9MB in the beginning and 951.2MB in the end (delta: -786.3MB). Peak memory consumption was 945.9MB. Max. memory is 8.0GB. [2022-12-12 18:33:07,926 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 166.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:33:07,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.52ms. Allocated memory is still 189.8MB. Free memory was 164.9MB in the beginning and 135.1MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-12-12 18:33:07,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.36ms. Allocated memory is still 189.8MB. Free memory was 135.1MB in the beginning and 132.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 18:33:07,926 INFO L158 Benchmark]: Boogie Preprocessor took 50.60ms. Allocated memory is still 189.8MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:33:07,926 INFO L158 Benchmark]: RCFGBuilder took 512.24ms. Allocated memory is still 189.8MB. Free memory was 129.8MB in the beginning and 109.4MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-12 18:33:07,927 INFO L158 Benchmark]: TraceAbstraction took 865892.78ms. Allocated memory was 189.8MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 108.3MB in the beginning and 951.2MB in the end (delta: -842.9MB). Peak memory consumption was 889.3MB. Max. memory is 8.0GB. [2022-12-12 18:33:07,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 166.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 464.52ms. Allocated memory is still 189.8MB. Free memory was 164.9MB in the beginning and 135.1MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.36ms. Allocated memory is still 189.8MB. Free memory was 135.1MB in the beginning and 132.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.60ms. Allocated memory is still 189.8MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 512.24ms. Allocated memory is still 189.8MB. Free memory was 129.8MB in the beginning and 109.4MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 865892.78ms. Allocated memory was 189.8MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 108.3MB in the beginning and 951.2MB in the end (delta: -842.9MB). Peak memory consumption was 889.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1s, 198 PlacesBefore, 81 PlacesAfterwards, 204 TransitionsBefore, 82 TransitionsAfterwards, 9810 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 58 TrivialYvCompositions, 97 ConcurrentYvCompositions, 6 ChoiceCompositions, 167 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9707, independent: 9459, independent conditional: 9459, independent unconditional: 0, dependent: 248, dependent conditional: 248, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 9707, independent: 9459, independent conditional: 0, independent unconditional: 9459, dependent: 248, dependent conditional: 0, dependent unconditional: 248, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 9707, independent: 9459, independent conditional: 0, independent unconditional: 9459, dependent: 248, dependent conditional: 0, dependent unconditional: 248, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 9707, independent: 9459, independent conditional: 0, independent unconditional: 9459, dependent: 248, dependent conditional: 0, dependent unconditional: 248, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7053, independent: 6946, independent conditional: 0, independent unconditional: 6946, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7053, independent: 6926, independent conditional: 0, independent unconditional: 6926, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 127, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 217, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 186, dependent conditional: 0, dependent unconditional: 186, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9707, independent: 2513, independent conditional: 0, independent unconditional: 2513, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 7053, unknown conditional: 0, unknown unconditional: 7053] , Statistics on independence cache: Total cache size (in pairs): 14193, Positive cache size: 14086, Positive conditional cache size: 0, Positive unconditional cache size: 14086, Negative cache size: 107, Negative conditional cache size: 0, Negative unconditional cache size: 107, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 1033]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 325 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.3s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 865.8s, OverallIterations: 12, TraceHistogramMax: 102, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 28.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7013 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7013 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 357 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3895 IncrementalHoareTripleChecker+Invalid, 4253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 357 mSolverCounterUnsat, 5 mSDtfsCounter, 3895 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2489 GetRequests, 2057 SyntacticMatches, 1 SemanticMatches, 431 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2339 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96722occurred in iteration=11, InterpolantAutomatonStates: 271, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 439 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 23.3s InterpolantComputationTime, 3360 NumberOfCodeBlocks, 2973 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 4197 ConstructedInterpolants, 13 QuantifiedInterpolants, 12294 SizeOfPredicates, 26 NumberOfNonLiveVariables, 6213 ConjunctsInSsa, 287 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 8861/84212 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown